Chemical durability of low-level simulated nuclear waste glasses with high-concentrations of minor components
Book
·
OSTI ID:225399
- Pacific Northwest Lab., Richland, WA (United States)
The chemical durability of low-level waste (LLW) glasses, containing soluble and over-saturated amounts of Cl, F, P{sub 2}O{sub 5}, SO{sub 3}, and Cr{sub 2}O{sub 3}, was investigated using a static Product Consistency Test (PCT) and a dynamic Flow-Through Test (FTT). Results from both tests showed that P{sub 2}O{sub 5}, SO{sub 3}, and Cr{sub 2}O{sub 3} decreased glass durability, among which Cr{sub 2}O{sub 3} had the largest effect. PCT glass dissolution was affected by the leaching of the minor components into solution, and the pH was the lowest for F-spiked glasses both at the beginning and the end of the PCT. In the case, F appeared to improve the glass durability. However, FTT results revealed that F in glass severely decreased the glass durability to a greater extent than Cr{sub 2}O{sub 3}. Chlorine appeared to improve glass durability slightly.
- DOE Contract Number:
- AC06-76RL01830
- OSTI ID:
- 225399
- Report Number(s):
- CONF-950787--
- Country of Publication:
- United States
- Language:
- English
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